Please report back how bad it is. We're flying to Cancun next Thursday and have an old crate scheduled.

How are seeing what aircraft is allocated that far out? I'd be surprised if even internally they were allocated that far in advance (any staffers care to comment?)

Your odds for decent IFE might not be as bad as you fear, having a look at the last month on the BA Source, it seems that 19 of the 22 flights on that route were operated by aircraft which have been refurbished and would therefore have the latest Panasonic systems.

ETA: I see the seat map is currently showing a 9 across WT cabin, i.e. unrefurbished, but that could certainly change (I've suffered late swaps between the refurbished and non-refurbished out of LGW myself). But the odds may have got a bit worse I admit.....